Pittsburgh ( /E?pE?tsbE?rE?/, PITS-burg) is the second-largest city in the U.S. Commonwealth of Pennsylvania, after Philadelphia, and the county seat of Allegheny County. Regionally, it anchors the largest urban area of both Appalachia and the Ohio River Valley. Nationally, it is the 27th-largest urban area in the United States. The population of the city in 2010 was 305,704, while that of the seven-county metropolitan area stood at 2,356,285.Downtown Pittsburgh retains substantial economic influence, ranking at 25th in the nation for jobs within the urban core and 6th in job density. The characteristic shape of Pittsburgh's central business district is a triangular tract carved by the confluence of the Allegheny and Monongahela rivers, which form the Ohio River. The city features 151 high-rise buildings, 446 bridges, two inclined railways, and a pre-revolutionary fortification. Pittsburgh is known colloquially as "the City of Bridges" and "the Steel City" for its many bridges and former steel manufacturing base.While the city is historically known for its steel industry, today its economy is largely based on healthcare, education, technology, robotics, and financial services. The downturn of the steel industry left no steel mills within city limits and only two remaining mills (the Edgar Thomson Steel Works and Brackenridge Works) in the county,[note 1] though more than 300 steel-related businesses remain in the area. By contrast, the region now supports 1,600 technology and research companies, ranging from major campuses for Google, Intel, RAND, Apple and Disney Research to small startups. In the last few decades the city has redeveloped abandoned industrial sites with new housing, shopping, and offices, such as SouthSide Works, Bakery Square and the Pittsburgh Technology Center.While Pittsburgh faced an economic crisis in the 1980s as regional industries waned, modern Pittsburgh is economically strong. The housing market is relatively stable as of 2012, d

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Pittsburgh is part of the AAF’s District 2, which covers Pennsylvania, New York, New Jersey, Maryland, Delaware and Washington, D.C. That competition was held in May, followed by national Addys in Jun...

Frankel, a Democrat who represents the section of Pittsburgh where the horrific synagogue shooting ... But the recent success of congressional candidates – from Pennsylvania and conservative districts ...